Profile U CH09

Learning Objectives

After studying this chapter, you will be able to:❍ Describe the purpose of profi le geometric tolerances.❍ Apply or interpret profi le geometric tolerances on drawings.❍ Draw or interpret profi le of a line tolerances.❍ Explain methods used to apply bilateral tolerances.❍ Explain methods used to apply unilateral tolerances.❍ Apply or interpret profi le of a surface tolerances.❍ Draw or interpret coplanar profi le tolerances.❍ Explain the types of controls specifi ed by composite profi le tolerances.

Technical TermsCoaxialComposite profi le toleranceCoplanar profi le toleranceCoplanar surfacesDisposedLocating tolerance zoneProfi le

309

Profi le form and orientation tolerance zoneProfi le geometric tolerancesProfi le of a line toleranceProfi le of a surface toleranceProfi le toleranceTrue profi leUnilateral profi le

This chapter explains the concepts and techniques of dimensioning and tolerancing to control the profile of geometric shapes. Profile geometric tolerancescontrol the form, orientation, and/or location of straight lines or surfaces, arcs, and irregular curves.

Profile TolerancesProfile TolerancesProfile can be characterized as the outline of an object represented either by

an external view or a cross section through the object. The true profile or actual desired shape of the object is the basis of the profile tolerance. The true profile should be defined by basic dimensions in most applications. The profile tolerancespecifies a uniform boundary along the true profile within which the elements of the surface must lie. Profile can be used to control form or combinations of size, form, and orientation. When used as a refinement of size, the profile tolerance must be contained within the size tolerance. Profile geometric tolerances are always regardless of feature size.

Profile tolerances are always equally disposed bilateral unless otherwise specified. An equally disposed bilateral tolerance is where the tolerance zone is split equally on each side of true profile. Profile tolerances can be specified as unequally disposed

ProfileTolerances

Chapter 9

This sample chapter is for review purposes only. Copyright © The Goodheart-Willcox Co., Inc. All rights reserved.

310 Geometric Dimensioning and Tolerancing

bilateral or as unilateral tolerance zones. An unequally disposed bilateral tolerance is where the tolerance zone is split on each side of true profile, but the distance on each side is not equal. A unilateral tolerance is where the entire tolerance zone is on one side of the true profile. A profile tolerance can also be specified between two given points, all around the object, or all over the entire part. The term disposed refers to the distribution of material added to or removed from the part on the specified side of true profile. A profile tolerance is specified by connecting the feature control frame, using a leader, to the view or section that clearly shows the intended profile. There are two types of profile geometric tolerances: profile of a line and profile of a surface.

Profile of a LineThe profile of a line tolerance is a two-dimensional or cross-sectional geometric

tolerance that extends along the length of the feature. The profile of a line symbol and associated feature control frame are shown in Example 9-1. The datum reference is provided in the feature control frame because the profile geometric tolerance zone is generally oriented to one or more datums. Profile of a line is used where it is not necessary to control the profile of the entire feature.

Symbol Specifications

H = Letter height

H

2H

H

2H

Example 9-1. A feature control frame with the profi le of a line geometric characteristic symbol and datum reference.

A profile of a line tolerance is used in situations where parts or objects have changing cross sections throughout the length. A pump impeller is an example of a part that has changing cross sections. Datums are used in some situations, but are not necessary when the only requirement is the profile shape taken at various cross sections. When the leader from the feature control frame extends to the related surface without any additional clarification, the profile tolerance is assumed to be bilateral. Equally disposed bilateral tolerances are equally split on each side of the basic dimensions that establish true profile.

Profile of a Line between Two PointsThe profile tolerance can be between two given points of the object. This

specification is shown by using the between symbol under the feature control frame. Any combination of letters can be used, such as “A” and “B” or “C” and “D.” The true profile is established by a basic or tolerance dimension. Profile of a line is a single cross-sectional check anywhere along the intended surface. The profile tolerance is assumed to be equally disposed bilateral unless otherwise specified. This means that the profile tolerance is split equally on each side of the true profile. The actual profile of the feature is confined within the profile tolerance zone. Refer to Example 9-2. In the example shown, the profile tolerance is equally disposed bilateral and has an equal disposition of 0.1 on each side of the true profile.

Chapter 9 Profile Tolerances 311

Between Symbol Specifications

The Drawing

The Meaning

H = Letter height

H

3H

0.8H

0.6H

Basicdimensionoption

± Dimensionoption

Betweensymbol

True profile

Basic Dimension Option (controls form and location)

± Dimension Option (controls form only)

0.2 profiletolerance zone


X

38.537.5

Y

Example 9-2. A profi le of a line tolerance specifi ed between two points.


Profile of a Line All AroundProfile of a line can also specify a tolerance zone that goes around the entire

object. When this is desired, the feature control frame is connected to the object with a leader as previously discussed and the all around symbol must be placed on the leader, as shown in Example 9-3. Any note indicating between two points is excluded. The specification in Example 9-3 is assumed to be a bilateral profile of a line tolerance equally split 0.2 on each side of the true profile.

Unilateral and Unequally Disposed Profile of a LineAn equally disposed bilateral profile tolerance is assumed unless unilateral or

unequally disposed specifications are provided. A unilateral profile is where the entire tolerance zone is on one side of the true profile. When a unilateral profile tolerance is required, the unequally disposed symbol is placed after the geometric tolerance in the feature control frame as shown in Example 9-4. When the unilateral profile tolerance has material added to the feature or part, the profile tolerance value is repeated after the unequally disposed symbol. The feature control frame is connected to the edge view of the surface with a leader line. This is the preferred ASME Y14.5 use for the application shown in Example 9-4.

All Around Symbol Specifications

The Drawing

The Meaning

H = Letter height

H

All around symbol

True profile


Example 9-3. A profi le of a line tolerance specifi ed all around.


Unequally DisposedSymbol Specifications

The Drawing

The Meaning

H = Letter height

1.5H

0.8H

Unilateral profile tolerance providesadditional material to feature or part

Unequally disposed symbol

Profile geometric tolerance

0.5 profile toleranceoutside of true profile True profile

Example 9-4. An application of a unilateral profi le tolerance where the entire profi le tolerance is outside of true profi le.


When the unilateral profile tolerance has material taken from the feature or part, the profile tolerance value is placed before the unequally disposed symbol and a 0 is placed after the unequally disposed symbol to denote that the entire profile tolerance is inside of true profile. The feature control frame is connected to the edge view of the surface with a leader line as shown in Example 9-5. This is the preferred ASME Y14.5 use for this application.

The Drawing

The Meaning

Unilateral profile tolerance has lessmaterial taken from feature or part


Profile geometric tolerance

0.5 profile toleranceinside of true profile True profile

Example 9-5. An application of a unilateral profi le tolerance where the entire profi le tolerance is inside of true profi le.


When the profile tolerance is not equally split on each side of true profile, the total profile tolerance value is placed before the unequally disposed symbol in the feature control frame and the value of the tolerance that adds material to the feature or part is placed after the unequally disposed symbol. The feature control frame is connected to the edge view of the surface with a leader line as shown in Example 9-6.This is the preferred ASME Y14.5 use for this application.

The Drawing

The Meaning

Value of the profile tolerance thatadds material to the feature or part


Total profile geometric tolerance

True profile

0.5 true profiletolerance

0.3 value of the profile tolerancethat adds material to the part

Example 9-6. An application of an unequally disposed profi le tolerance.


An alternate method used when the profile tolerance is unequally disposed displays the total tolerance inside the feature control frame. Either the inside or outside of true profile is shown as a basic dimension. Example 9-7 shows the unequally disposed profile tolerance on the inside as a basic dimension of 0.2. The same result can be achieved by showing a basic dimension of 0.3 on the outside. One or the other must be dimensioned to show which way the tolerance applies and how much profile tolerance is allowed inside or outside. A dimension line with arrowheads is placed on each side of the phantom lines and connects the feature control frame with a leader. The basic dimension is required because the true profile is defined by basic dimensions and the tolerance zone must also be defined basic. The actual profile of the part must be between the basic zone created around the true profile.

The Drawing

The Meaning

0.2 basic profile toleranceinside of true profile

True profile

0.5 total profiletolerance

Example 9-7. Using a basic dimension to indicate an unequally disposed profi le tolerance.


An alternate option when a unilateral profile tolerance is required is to draw a short phantom line parallel to the true profile on the side of the intended unilateral tolerance. A dimension line with arrowhead is placed on the far side and a leader line connects the feature control frame on the other side, as shown in Example 9-8.

The Drawing The MeaningOutside UnilateralProfile Tolerance

Inside UnilateralProfile Tolerance

The Drawing The Meaning

True profile

True profile0.4 profiletolerance zone


Example 9-8. An alternate method for specifying a unilateral profi le tolerance uses a phantom line to indicate the side of true profi le the intended tolerance applies.

Profile of a SurfaceA profile of a surface tolerance is used where it is desired to control the entire

surface as a single feature. The profile of a surface geometric characteristic and associated feature control frame are detailed in Example 9-9. Profile of a surface is a blanket tolerance that is three-dimensional and extends along the total length and width or circumference of the object or feature(s). In most cases, the profile of a surface tolerance requires reference to datums for proper orientation of the profile.

Symbol SpecificationsH = Letter height

H H

2H2H

Example 9-9. A feature control frame with the profi le of a surface geometric characteristic symbol and datum reference.


Profile of a Surface between Two PointsThe profile of a surface tolerance zone is equally disposed bilateral unless

otherwise specified, just as for profile of a line. Profile of a surface can be between two points and is handled in the same manner used for profile of a line between two points. A sample drawing and its related meaning are shown in Example 9-10.

Actual profilemay be anywhere

inside profiletolerance zone

0.4 profile tolerance zone equallysplit on both sides to true profile

True profile

Datum plane A

The Meaning

The Drawing

Example 9-10. A profi le of a surface tolerance specifi ed between two points.


Profile of a Surface All Around or All OverSurface profile can also be applied to completely blanket objects that have a

constant uniform cross section by placing the all around symbol on the leader line. When this is done, surfaces all around the object outline must lie between two parallel boundaries equal in width to the given geometric tolerance. The tolerance zone should also be perpendicular to a datum plane. Refer to Example 9-11. The all over symbol, shown in Example 9-11, is used when it is necessary for the profile tolerance zone to be all over the entire part.

May notexceed R0.2

0.4 wide profiletolerance zone

Datum plane A

All around symbol

90°

The Meaning(All around application. All over covers the entire part.)

The Drawing

or

All over symbol

Example 9-11. Using a profi le of a surface tolerance all around or all over.


Profile of a Sharp CornerWhen a profile tolerance is at a sharp corner, the tolerance zone extends to the

intersection of the boundary lines. In these situations, a rounded corner can occur because the actual surface can be anywhere within the tolerance zone boundary. If this roundness must be controlled, then a maximum radius note shall be added to the drawing. The drawing in Example 9-11 has the note R0.2 MAX to indicate this.

Unilateral or Unequally Disposed Profile of a SurfaceThe profile of a surface can also be specified as a unilateral or unequally

disposed tolerance using the same options available for the profile of a line previously described. The following options correlate with the drawing shown in Example 9-12.

When a unilateral profile tolerance is required, the unequally disposed symbol is placed after the geometric tolerance in the feature control frame as shown in Example 9-12A. When the unilateral profile tolerance has material added to the feature or part, the profile tolerance value is repeated after the unequally disposed symbol. The feature control frame is connected to the edge view of the surface with a leader line. This is the preferred ASME Y14.5 use for this application.

When the unilateral profile tolerance is inside of true profile, the profile tolerance value is placed before the unequally disposed symbol and a 0 is placed after the unequally disposed symbol to denote that the entire profile tolerance has less material taken from the feature or part. The feature control frame is connected to the edge view of the surface with a leader line as shown in Example 9-12B. This is the preferred ASME Y14.5 use for this application.

When the profile tolerance is not equally split on each side of true profile, the total profile tolerance value is placed before the unequally disposed symbol in the feature control frame and the value of the tolerance that adds material to the feature or part is placed after the unequally disposed symbol. The feature control frame is connected to the edge view of the surface with a leader line as shown in Example 9-12C. This is the preferred ASME Y14.5 use for this application.

An alternate method used when the profile tolerance is unequally disposed displays the total tolerance inside the feature control frame. Either the inside or outside of true profile is shown as a basic dimension. Example 9-12D shows the profile tolerance on the inside as a basic dimension of 0.1. The same result can be achieved by showing a basic dimension of 0.4 on the outside. One or the other must be dimensioned to show which way the tolerance applies and how much profile tolerance is allowed inside or outside. A dimension line with arrowheads is placed on each side of the phantom lines and connects the feature control frame with a leader. The basic dimension is required because the true profile is defined by basic dimensions and the tolerance zone must also be defined basic. The actual profile of the part must be between the basic zone created around the true profile.


A

B

C

EE

D

Example 9-12. Unilateral and unequally disposed profi le of a surface tolerance applications. A—Applying the unilateral profi le tolerance outside of true profi le. B—Applying the unilateral profi le tolerance inside of true profi le. C—Applying an unequally disposed profi le tolerance. D—An alternate method when an unequally disposed profi le tolerance is required uses a basic dimension to indicate where the tolerance zone is intended. E—An alternate option when a unilateral profi le tolerance is required uses a short phantom line on the side of the true profi le to indicate where the tolerance zone is intended.

An alternate option used when a unilateral profile tolerance is required is to draw a short phantom line on the side of the true profile where the unilateral tolerance zone is intended. The feature control frame is connected to the feature with a leader as shown in Example 9-12E.

NoteNoteExample 9-12 shows six methods of applying profi le tolerances. An actual drawing would only show one profi le tolerance application.


Profile of Coplanar SurfacesCoplanar surfaces are two or more surfaces on a part that are on the same plane.

A coplanar profile tolerance can be used when it is desirable to treat two or more separate surfaces, which lie on the same plane, as one surface. To control the profile of these surfaces as a single surface, place a phantom line between the surfaces in the view where the required surfaces appear as lines. Connect a leader from the feature control frame to the phantom line and add a note below the feature control frame identifying the number of surfaces. Refer to the note 6 SURFACES shown in Example 9-13.

The drawing shown in Example 9-13 can also have the surfaces controlled with a flatness geometric tolerance without using a datum reference. When the feature control frame leader points to the phantom line, all of the surfaces are jointly controlled. For example, if there are a total of four additional raised surfaces behind the two that can be seen in the front view, the note 6 SURFACES is placed below the feature control frame. A top view would also be required to provide dimensions to the 6 raised features.

0.6 profile tolerance zone

The Meaning

The Drawing

Example 9-13. An application of a coplanar profi le tolerance.


When there are several coplanar surfaces, it can be desirable to establish two surfaces as datum planes with a common profile tolerance, such as the datum features labeled A and B in Example 9-14. Other coplanar surfaces can be controlled with a profile tolerance relative to both datums by placing the letters A-B in the feature control frame. The profile tolerance zone applies to all surfaces, including the datums. Refer to Example 9-14.

0.3 profile tolerance at datum plane

0.6 profile tolerance zone

Simulated datum A-B

The Drawing

The Meaning

Example 9-14. When there are several coplanar surfaces, it can be desirable to establish two surfaces as datum planes with a common profi le tolerance and control other surfaces with a profi le tolerance specifi ed to both datums. A note specifying the number of surfaces or the continuous feature symbol can be used.


Profile of Plane SurfacesProfile tolerancing can be used to control the form and orientation of planar

surfaces. For example, profile of a surface can be used to control the angle of an inclined surface in relationship to a datum, as shown in Example 9-15. Notice in Example 9-15 that the required surface must lie between two parallel planes 0.1 mm apart equally split on each side of a true plane that has a basic angular orientation to a datum.

Profile of Conical FeaturesA profile tolerance can be used to control the form, or form and orientation, of

a conical surface. The feature can be controlled independently as a refinement of size or it can be oriented to a datum axis. In either case, the profile tolerance must be within the size tolerance. Conical profile requires that the actual surface lie between

Actual surface

True profile 0.1 wide profiletolerance zone

Datumplane B

Datum plane A

60

110°

The Drawing

The Meaning

Example 9-15. Specifying the profi le of an inclined planar surface.


True profile

∅40.2

∅39.830°

0.04 wide profile tolerance zone

The Drawing

The Meaning

Example 9-16. Specifying the profi le of a conical feature.

two coaxial boundaries equal in width to the specified geometric tolerance, having a basic included angle, and within the size limits. (Coaxial means having the same axis.) Refer to Example 9-16.

Composite Profile ToleranceA composite profile tolerance provides for the location of a profiled feature

and, at the same time, the control of form and orientation. This is done by doubling the height of the feature control frame that points to the feature to be controlled. The profile geometric characteristic symbol is placed in the first compartment. The top half of the feature control frame is called the locating tolerance zone. This is the profile tolerance that locates the feature from datums. The related datum reference is given in the order of precedence in the feature control frame and the feature to be controlled is located from datums with basic dimensions. The bottom half of the feature control frame is called the profile form and orientation tolerance zone. Datum referencing in the lower area establishes the limits of size, form, and orientation of the profile related to the locating tolerance zone. The actual feature surface must be within both tolerance zones, as shown in Example 9-17.


Locating zone

Profile zone

Actual surface

Datum plane C

0.2 wide profileform/orientation tolerance zone

Datum plane A

Datum plane B

0.6 wide profilelocation tolerance zone

The Drawing

The Meaning

Example 9-17. A composite profi le tolerance provides for the location of a profi led feature and, at the same time, the control of form and orientation.


Profile of a Feature to Be RestrainedWhen any geometric tolerance is to be verified with the part in a restrained

condition, the features to be used as datum features must be identified. It may also be necessary to specify the force required to restrain the part. Refer to Example 9-18.In the drawing shown, the part relaxes after being removed from the bending press and the profile must be maintained in the restrained condition. Notice that NOTE 1 under the feature control frame specifies the process used and the force required to restrain the part.

Example 9-18. Specifying a profi le of a surface tolerance to be verifi ed in a restrained condition.

Specifying Basic Dimensions in a NoteSpecifying Basic Dimensions in a NoteA general note can be used to specify basic dimensions. Use the general note

“UNTOLERANCED DIMENSIONS ARE BASIC” rather than using the customary rectangular block around the dimension to denote basic. Refer to Example 9-11. This general note was once used to save time in manual drafting in situations requiring an extensive number of basic dimensions on the drawing. This issue is not a problem when using CADD, because basic dimensions are placed quickly.


There is a good reason not to use the general note. When the note is used, the reader of the drawing must understand GD&T and know when basic dimensions are used and their specific applications. The reader must also sort through the dimensions to determine which dimensions are basic and which are plus/minus. This can be difficult for the reader and some dimensions can be missed if dimensions that rely on the tolerances in the title block are used. The general note should be avoided to reduce misinterpretation of the meaning of the drawing. Check with your company or instructor before using this method to determine if it is appropriate.

Combination of Geometric TolerancesCombination of Geometric TolerancesProfile tolerancing can be combined with other types of tolerancing. For

example, a surface can have a profile tolerance controlled within a specified amount of parallelism relative to a datum. When this is done, the surface must be within the profile tolerance, and each line element of the surface must be parallel to the given datum by the specified parallelism tolerance, as shown in Example 9-19.

0.15 sectional tolerancezone parallel to datum0.5 profile

tolerance zone

Datum plane XDatum plane Y

The Drawing

The Meaning

Example 9-19. An application of geometric tolerances combining profi le of a surface between two points and single element parallelism.


Chapter Test

Name _________________________________

1. The _______________ tolerance specifi es a uniform boundary along the true profi le within which the elements of the surface must lie.

2. Complete this statement: A profi le tolerance is specifi ed by connecting the feature control frame, using a leader, to ____________________________________

_______________________________________________________________________

_______________________________________________________________________

______________________________________________________________________ .

3. Name the two types of profi le geometric tolerances. _________________________

_______________________________________________________________________

_______________________________________________________________________

4. Which situations, or types of features or parts, frequently require the use of a profi le of a line tolerance? ________________________________________________

_______________________________________________________________________

_______________________________________________________________________

5. How is a profi le tolerance shown to be specifi ed between two given points?

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

6. How is a profi le tolerance specifi ed all around an object or feature, rather than between two given points? _______________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

7. Explain the basic difference between profi le of a line and profi le of a surface.

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

9


8. Either the profi le of a line or the profi le of a surface can be all around, between two given points, unilateral, or equally disposed bilateral. True or False?

9. Defi ne equally disposed bilateral tolerance. _________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

10. An equally disposed bilateral profi le is assumed unless otherwise specifi ed. True or False?

11. Defi ne unilateral profi le. _________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

12. Given the following drawing, describe the profi le geometric tolerance and related drawing specifi cations. Indicate whether the drawing shows preferred ASME Y14.5 use or an alternate practice. ___________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________


_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________



_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

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_______________________________________________________________________

_______________________________________________________________________

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16. Give the general note that can be used to specify basic dimensions that are used to dimension true profi le rather than using the customary rectangular block around the dimension to indicate basic. ____________________________________

_______________________________________________________________________

_______________________________________________________________________

17. Explain why you would want to avoid using the general note described in Question 16. ____________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

18. Defi ne coplanar surfaces._________________________________________________

_______________________________________________________________________

_______________________________________________________________________

19. Explain how to represent as a single surface the surface profi le of four (4) coplanar surfaces. _______________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

20. Profi le tolerancing can be used to control the form and orientation of a plane surface. True or False?

21. Profi le of a surface tolerancing can be used to control the angle of an inclined surface in relationship to a datum. True or False?


22. A profi le tolerance can be used to control the form, or form and orientation, of a conical surface. True or False?

23. Describe the purpose of a composite profi le tolerance. _______________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

24. Given the following drawing, describe the requirement specifi ed by the profi le geometric tolerance and related note. ______________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________


Print Reading Exercises

Name _________________________________

The following print reading exercises use actual industry prints with related questions that require you to read specifi c dimensioning and geometric tolerancing representations. The answers should be based on previously learned content of this book. The prints used are based on ASME standards. However, company standards can differ slightly. When reading these prints, or any other industry prints, a degree of fl exibility is required to determine how individual applications correlate with the ASME standards.

Refer to the print of the PLATE-TOP MOUNTING found on page 425.

1. Name the profi le geometric tolerances found on this print. ___________________

_______________________________________________________________________

2. Completely describe the profi le geometric tolerances found on this print. _______

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

Refer to the print of the HOUSING-LENS, FOCUS found on page 427.

3. Name the profi le geometric tolerances found on this print. ___________________

_______________________________________________________________________

_______________________________________________________________________

4. Completely describe the profi le geometric tolerances and related features found on this print.

A) ____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

B) ____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

C) ____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

9Chapter 9 Profile Tolerances 335

Refer to the print of the FEMORAL A-P SAW GUIDE STD. found on page 430.

5. Name the profi le geometric tolerance found on this print. ____________________

_______________________________________________________________________

6. Completely describe the profi le geometric tolerance found on this print. ________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

Refer to the print of the CEMENT RESTRICTOR found on page 432.


_______________________________________________________________________


_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

9. Name the symbol found on the leader associated with the geometric tolerance described in Question 8. _________________________________________________

_______________________________________________________________________

10. Describe the function of the symbol named in Question 9. ____________________

_______________________________________________________________________

Refer to the print of the SAW GUIDE FIXATION BLOCK found on page 433.


_______________________________________________________________________


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Refer to the print of the STANDARD REAMER GUIDE found on page 434.

13. Describe the profi le geometric tolerance associated with the slots and identify the number of places controlled. __________________________________________

_______________________________________________________________________

_______________________________________________________________________

14. Name the profi le geometric tolerance related to the R.375 feature. _____________

_______________________________________________________________________


15. Describe the datum reference related to the geometric tolerance specifi ed in Question 14. ____________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

16. Name and describe the function of the symbol placed between the geometric tolerance values in the feature control frame associated with the R.375 feature. Explain the application of the values. ______________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

17. Name and describe the function of the symbol placed below the feature control frame associated with the R.375 feature. ____________________________________

_______________________________________________________________________

_______________________________________________________________________

_______________________________________________________________________

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Profile U CH09

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Transcript of Profile U CH09